The occupation
What does a mechanical engineer do?
Mechanical engineers analyze problems, design mechanical and thermal devices, develop prototypes, test systems, investigate failures, and oversee manufacturing. The occupation spans far beyond aerospace, which makes the degree portable but also means employers may expect a broad mechanical foundation.
Use these duties as the first reality check when planning how to become a mechanical engineer.
- Analyze problems that a mechanical or thermal device may solve
- Design or redesign devices and subsystems
- Develop and test prototypes
- Investigate equipment failures and recommend fixes
- Oversee manufacturing for designed devices
The working day
A day in the life of a mechanical engineer
A mechanical engineer may begin with a performance problem: a component is too hot, a structure vibrates, or a prototype misses a requirement. You review the evidence, revise the design, and decide what test would separate competing explanations.
Later work may include a design review, a visit to a production area, or a conversation with technicians who are building the prototype. The job moves between analysis and the physical system being analyzed.
Education route
How to Become a Mechanical Engineer, Step by Step
When you plan how to become a mechanical engineer, use the sequence below to see where a space-focused degree fits and where you need additional preparation. Mechanical engineering is the standard degree; aerospace engineering can overlap when it includes strong mechanical and thermal design work.
- 01
Choose a mechanical engineering foundation
The standard route is a bachelor’s degree in mechanical engineering or mechanical engineering technology, with mathematics, physical science, engineering, and design.
- 02
Make an aerospace degree legible to mechanical employers
Use coursework and projects to show mechanics, thermodynamics, materials, design, and testing rather than relying on the word aerospace in the degree title.
- 03
Build and test something
Internships, co-ops, and team projects make it easier to show that you can move from analysis to a prototype and learn from failure.
- 04
Apply to a defined subsystem
Thermal control, structures, mechanisms, robotics, manufacturing, and test roles each reward different project evidence.
- 05
Consider PE licensure only when the work calls for it
Entry-level licensure is not required. Engineers who provide services to the public need the Professional Engineer route later in their careers.
Where the work happens
Where mechanical engineers work
Engineering offices
Mechanical engineers do most design and analysis work in offices, often as part of a multidisciplinary team.
Manufacturing and worksites
Engineers visit production areas and worksites when a prototype, process, or failure needs direct attention.
Research and development
R&D settings focus on new devices, materials, prototypes, tests, and the evidence needed to improve a design.
Technical directions
Mechanical Engineer specialties and focus areas
Thermal systems
Thermal engineers manage heat transfer, temperature, and environmental limits in machines and vehicles.
Structures and mechanisms
This work covers loads, motion, materials, moving assemblies, and physical interfaces.
Robotics
Robotic engineering combines mechanisms, sensors, and control so a machine can act in its environment.
Manufacturing and test
These roles turn designs into repeatable products and investigate whether the hardware meets its requirements.
Before you commit
The hard parts of becoming a mechanical engineer
The degree is broad because the job is broad
You need depth in at least one subsystem without losing the mechanics, thermal, materials, and design base employers expect.
Hardware makes assumptions visible
A prototype can expose loads, tolerances, heat, vibration, or manufacturing limits that the first model missed.
Some problems require being on site
BLS notes that mechanical engineers may visit worksites when equipment or a problem needs direct attention.
Public-facing engineering adds licensure
Mechanical engineers who sell engineering services to the public must be licensed.
BLS wage data
How much do mechanical engineers make?
The national median is $104,110. The full OEWS wage span runs from $73,990 at the 10th percentile to $164,340 at the 90th. A percentile is a place in the wage distribution, not a promise about your experience level.
Common questions
How to Become a Mechanical Engineer: common questions
What degree do you need to become a mechanical engineer?
Can an aerospace engineering graduate become a mechanical engineer?
Do mechanical engineers work in space companies?
Do entry-level mechanical engineers need a PE license?
Where do mechanical engineers work?
Primary sources
Sources for how to become a mechanical engineer
- BLS Occupational Outlook Handbook: Mechanical Engineers for duties, education, work settings, and credential context.
- BLS Occupational Employment and Wage Statistics, May 2025 for national and state wages and employment counts.
Occupation facts and wage records reviewed August 28, 2026.